Energizer iPotronic SportEar-iTronic - Headset with neck strap, Deep Bass Sound with Volume Control (White) [IPOEARSTRAPW] Deep Bass Sound: Closed type earphones structure delivers deep bass sound. Comfortable Fit: Elastomer material hanger for snug, comfortable fit on your ears. Soft Earbuds: Soft, silicone rubber earbuds are used for stable and comfortable fit in the ears. Compatible with all iPods, Mp3 players and all computers with a headphone port Ultra portable with Neck Strap and Volume Control